java.sql.SQLException: Connection has already been closed.

java.sql.SQLException:Connection has already been closed.

在执行手动开启事务:

Connection conn = this.getSqlSession().getConnection();
conn.setAutoCommit(false);

时,就会报错:

java.sql.SQLException:Connection has already been closed.

很郁闷,找了很久,最后突然恍然大悟,在设置自动提交之前要判断一下连接是不是关闭了 再执行,不就没有问题了吗,于是乎,代码换成如下所示:

/**
     * 开启事务
     */
    public void beginTran()  {
        Connection conn = this.getSqlSession().getConnection();
       try {
        if (conn != null && !conn.isClosed()) {
                    conn.setAutoCommit(false);
            }
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    }

就不报错了~
还是不够严谨啊~粗心太坑自己了!

你可能感兴趣的:(数据库)